Spark Plug - Stihl GS 461 Instruction Manual

Spark Plug

If the engine is down on power,
N
difficult to start or runs poorly at idle
speed, first check the spark plug.
Fit a new spark plug after about 100
N
operating hours – or sooner if the
electrodes are badly eroded. Install
only suppressed spark plugs of the
type approved by STIHL – see
"Specifications".
Remove the spark plug
Remove coarse dirt from the
N
machine
Turn screw plug above the rear
N
handle in the direction of the arrow
and remove filter cover – screw plug
is secured in the filter cover
GS 461
1
2
Lift the air baffle (1) up and off
N
Unplug spark plug boot (2)
N
Unscrew spark plug
N
Checking the Spark Plug
Clean dirty spark plug.
N
Check electrode gap (A) and
N
readjust if necessary – see
"Specifications".
Rectify the problems which have
N
caused fouling of the spark plug.
Possible causes are:
Too much oil in fuel mix.
–
Dirty air filter.
–
Unfavorable running conditions.
–
WARNING
Arcing may occur if the adapter nut (1) is
loose or missing. Working in an easily
combustible or explosive atmosphere
may cause a fire or an explosion. This
can result result in serious injuries or
damage to property.
Use resistor type spark plugs with a
N
properly tightened adapter nut.
Installing the spark plug
A
Install in the spark plug and tighten
N
Press on the spark plug boot (1)
N
firmly
Insert the air baffle (2) from above
N
Mount filter cover
N
English
1
2
1
23